Answer:
Yes
Step-by-step explanation:
A slanted straight line is one-to-one: It passes the "horizontal ilne test." This means that any line drawn horizontally through the given line intersects that line only once. The significance of this is that the given line/function has an inverse. y = x is one-to-one and has the inverse y = x. y = 2x is one-to-one and has the inverse y = (1/2)x.
X=99 and theres no question
Parabolas can shift up and down or left to right
Parabolas shifting left and right uses the formula of y=(x-a)^2 where a determined the amount it shifts.
E.g. y=(x-3)^2 moves right three units but if it was a +3 instead of -3, it moves three units to the left.
When parabolas move up or down, it uses y=mx^2+b (where b determines the amount it shifts)
If it is +10 , it moves ten units above but if it is -10 it moves ten units down
Answer:
In 4 hours they flew a combined 3740/4 = 935mph or 467.5mph each. +/- 17.5 to this number,
485mph & 450mph are their speeds.
Step-by-step explanation:
I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.
Answer: Albert's grand father is 50 years older that Albert this year.
Step-by-step explanation:
Let x represent Albert's age this year.
Let x represent Albert's grandfather age this year.
This year Albert and his grandfather's ages total to 64 years. This means that
x + y = 64- - - -- - - - - -1
In 3 years, Albert's grandfather will be 6 times as old. This means that
y + 3 = 6(x + 3)
y + 3 = 6x + 18
y = 6x + 18 - 3
y = 6x + 15
Substituting y = 6x + 15 into equation 1, it becomes
x + 6x + 15 = 64
7x = 64 - 15 = 49
x = 49/7
x = 7
y = 6x + 15 = 6 × 7 + 15
y = 57
The difference between their ages is 57 - 7 = 50 years
